Tuesday, December 7, 2010

How to control a Hadoop job using the web interfaces provided by the Job Tracker and Name Node

Hadoop provides a great way to manage your jobs and operating on HDFS using the web interface by setting the property webinterface.private.actions to true in file src/core/core-default.xml. 

When set to true, the web interfaces of JobTracker and NameNode may contain  actions, such as kill job, delete file, etc., that should  not be exposed to public.

Note: Enable this option only if the web interfaces for JobTracker and Name node are reachable by those who have the right authorizations. 


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